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A comment on Start all of your commands with a comma (2009).

Re:Start all of your commands with a comma (2009) by vordoo on Saturday April 04, 2020 @08:47PM (#22782776)
TL;DR Prefixing your custom commands/scripts with a comma, in order to avoid collision with present or future system commands.

Been doing it for years with a jj prefix instead, it is just under my index finger on the home row :-)

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Re:Start all of your commands with a comma (2009) by amelius on Saturday April 04, 2020 @10:09PM (#22783176)
Typing jj+tab gives me:

    jjdoc   jjs     jjtree
on Ubuntu 18.04
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